US11665238B2 - Method and system for data transmission between a sensor device and an electronic device - Google Patents

Method and system for data transmission between a sensor device and an electronic device Download PDF

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US11665238B2
US11665238B2 US16/745,905 US202016745905A US11665238B2 US 11665238 B2 US11665238 B2 US 11665238B2 US 202016745905 A US202016745905 A US 202016745905A US 11665238 B2 US11665238 B2 US 11665238B2
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dataset
sensor
electronic device
key
beacon
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US20200314182A1 (en
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Chih-Lung Yeh
Cheng-Wei Lu
Yung-feng Lai
Guan-Yu Lu
Yuan-Chieh Lin
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Bionime Corp
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Definitions

  • the disclosure relates to a mechanism for data transmission, and more particularly to a method and a system for data transmission between a sensor device and an electronic device.
  • U.S. Patent Application Publication No. 2018/0060529 discloses a network topology for an insulin pump system.
  • a controller of an insulin delivery device is configured to establish a first network connection with one or more peripheral devices, and to establish a second network connection with a mobile computing device.
  • the insulin delivery device is controlled to administer dosages of insulin to a patient.
  • the peripheral devices e.g., a blood glucose meter (BGM), a continuous glucose monitor (CGM), etc.
  • BGM blood glucose meter
  • CGM continuous glucose monitor
  • a mobile application installed on the mobile computing device is programmed to communicate with the controller over the second network connection.
  • the first network connection and the second network connection are embodied using Bluetooth® low energy (BLE). After the patient data has been transmitted from the peripheral devices to the insulin delivery device, the first network connection may be terminated.
  • BLE Bluetooth® low energy
  • an object of the disclosure is to provide a method for data transmission between a sensor device and an electronic device.
  • the method for data transmission between a sensor device and an electronic device includes:
  • the sensor device broadcasting, by the sensor device, a beacon dataset and a sensor dataset that is associated with the beacon dataset, the sensor dataset being generated by the sensor device and including data detected by the sensor device; in receipt of the beacon dataset, determining, by the electronic device, whether to receive the sensor dataset associated with the beacon dataset; and when it is determined to receive the sensor dataset associated with the beacon dataset, the electronic device operating in a scan mode so as to receive the sensor dataset associated with the beacon dataset.
  • Another object of the disclosure is to provide a system that is configured to implement the above-described method.
  • the system for data transmission includes:
  • a sensor device that is configured to broadcast a beacon dataset and a sensor dataset that is associated with the beacon dataset, the sensor dataset being generated by said sensor device and including data detected by said sensor device;
  • One effect of the disclosure is that, by using the beacon dataset to determine whether to receive the corresponding sensor dataset, the electronic device operates in the scan mode only when it is determined that the sensor dataset is to be received, and stays in the standby mode the remaining time. That is to say, while the sensor device broadcasts the sensor data that propagates in the air, the electronic device may be capable of receiving the sensor data by switching to the scan mode. As such, the sensor data may be transmitted without a connection being established between the electronic device and the sensor device.
  • the electronic device in the data transmitting procedure, is not required to establish a pairing and a one-to-one connection with the sensor device. In this manner, the power consumed by the data transmitting procedure may be significantly reduced.
  • FIG. 1 is a block diagram illustrating a system for data transmission according to one embodiment of the disclosure
  • FIG. 2 is a flow chart illustrating an encryption key transmitting procedure of a method for data transmission according to one embodiment of the disclosure
  • FIG. 3 is a flow chart illustrating a data transmitting procedure of the method for data transmission according to one embodiment of the disclosure.
  • FIG. 4 is a logic signal diagram illustrating operations of an electronic device during the data transmitting procedure.
  • FIG. 1 is a block diagram illustrating a system for data transmission according to one embodiment of the disclosure.
  • the system includes a sensor device 1 , a plurality of electronic devices 2 and a server 3 .
  • the sensor device 1 may be embodied using a continuous glucose monitor (CGM) that is configured to detect a physiologic parameter (e.g., blood glucose levels) associated with a test subject (e.g., a patient), and includes a microprocessor that is configured to generate a sensor dataset and a beacon dataset that are associated with each other. Once the sensor device 1 obtains a detected value of the physiologic parameter at a time instance, the sensor device 1 generates a corresponding sensor dataset. Each sensor dataset includes at least a detected value of the physiologic parameter detected by the sensor device 1 , and a time instance associated with the detected value (indicating a time at which the detected value was obtained). In addition, the sensor device 1 may further include a transmitter that supports Bluetooth® low energy (BLE) transmission.
  • BLE Bluetooth® low energy
  • the microcontroller is configured to control the transmitter to broadcast the beacon dataset and the sensor dataset that is associated with the beacon dataset.
  • the microcontroller is configured to control the transmitter to broadcast the beacon dataset and the sensor dataset periodically.
  • a plurality of detected values of the physiologic parameter associated with the test subject may have been obtained by the sensor device 1 at different time instances, respectively.
  • each sensor dataset generated by the microcontroller may incorporate all previously-obtained detected values of the physiologic parameter, or a set of newest ones of the detected values of the physiologic parameter, as of the time the sensor dataset is generated.
  • the sensor dataset may include a number N of most recent detected values of the physiologic parameter associated with the test subject (N ⁇ 2), and the number N of time instances respectively associated with the N number of detected values of the physiologic parameter.
  • Each of the time instances indicates a time at which the associated detected value of the physiologic parameter was obtained.
  • two sensor datasets (B 1 and B 2 ) and two beacon datasets (A 1 and A 2 ) are generated.
  • the beacon dataset A 1 is associated with the sensor dataset B 1
  • the beacon dataset A 2 is associated with the sensor dataset B 2
  • the beacon dataset A 1 and the sensor dataset B 1 are generated earlier than the beacon dataset A 2 and the sensor dataset B 2 .
  • the sensor dataset B 1 may include a detected value of the physiologic parameter and a time instance.
  • the microcontroller is configured to control the transmitter to broadcast the beacon dataset A 1 and the sensor dataset B 1 in said order.
  • the beacon dataset A 1 and the sensor dataset B 1 may be broadcasted repeatedly (e.g., periodically) until another (new) detected value of the physiologic parameter and a corresponding time instance are obtained.
  • the beacon dataset A 2 and the sensor dataset B 2 are generated.
  • the sensor dataset B 2 may incorporate the newly-detected value of the physiologic parameter and the corresponding time instance, and the detected value and the time instance originally included in the sensor dataset B 1 .
  • the microcontroller is configured to control the transmitter to broadcast the beacon dataset A 2 and the sensor dataset B 2 in said order.
  • Each of the electronic devices 2 may be embodied using a personal computer (PC), a laptop, a tablet, a mobile device (e.g., a smartphone), and includes a communication module 21 , a storage module 22 , and a processor 23 .
  • the electronic devices 2 may be owned by a same user or different users.
  • the processor 23 may include, but not limited to, a single core processor, a multi-core processor, a dual-core mobile processor, a microprocessor, a microcontroller, a digital signal processor (DSP), a field-programmable gate array (FPGA), an application specific integrated circuit (ASIC), a radio-frequency integrated circuit (RFIC), etc.
  • DSP digital signal processor
  • FPGA field-programmable gate array
  • ASIC application specific integrated circuit
  • RFIC radio-frequency integrated circuit
  • the communication module 21 may include a short-range wireless communication module supporting a short-range wireless communication network using a wireless technology of Bluetooth® and/or Wi-Fi, BLE, etc., and a mobile communication module supporting telecommunication using Long-Term Evolution (LTE), the third generation (3G) and/or fourth generation (4G) of wireless mobile telecommunications technology, and/or the like.
  • LTE Long-Term Evolution
  • the storage module 22 may be embodied using one or more of a hard disk, a solid-state drive (SSD), flash memory or other non-transitory storage medium.
  • the storage module 22 stores a software application therein.
  • the software application includes instructions that, when executed by the processor 23 , causes the processor 23 to implement a number of operations as described in the succeeding paragraphs.
  • the processor 23 of each of the electric devices 2 is configured to perform the operations/actions described in connection therewith in the succeeding paragraphs.
  • the server 3 is configured to communicate with the electronic devices 2 over a network 4 (e.g., the Internet) and is a cloud server in this embodiment.
  • the server 3 stores a number of user profiles, each being associated with a user of at least one of the electronic devices 2 .
  • Each of the user profiles may include account information associated with an account of the user (e.g., an account number and a password), user information associated with the user, and a key that is associated with the account.
  • each of the electronic devices 2 may be operated by a user executing an application to log into the server 3 using the account number and the password, and afterward, the electronic devices 2 may be configured to transmit data that is associated with the account of the user.
  • a method for data transmission between the sensor device 1 and one of the electronic devices 2 is implemented by the system of FIG. 1 , and includes an encryption key transmitting procedure and a data transmitting procedure. It is noted that the method may be implemented between the sensor device 1 and any one of the electronic devices 2 , and in the following paragraphs, a representative one of the electronic devices 2 a (which may be referred to as a target electronic device) is used as an example.
  • FIG. 2 is a flow chart illustrating steps of the encryption key transmitting procedure, according to one embodiment of the disclosure.
  • the encryption key transmitting procedure is implemented prior to transmission of actual data, so as to enable the sensor device 1 and the electronic device 2 a to encrypt and decrypt the data to be transmitted using an encryption key.
  • step 201 the processor 23 of the electronic device 2 a establishes a preliminary connection between the sensor device 1 and the electronic device 2 a .
  • the preliminary connection may be done when the sensor device 1 is to be used for the first time, and may be implemented using a peer-to-peer connection such as BLE or other wired/wireless connections.
  • the processor 23 of the electronic device 2 a transmits an encrypted first key to the sensor device 1 .
  • the encrypted first key was obtained by encrypting a first key using an encrypting algorithm.
  • the first key may be a user-provided key inputted by the user using the electronic device 2 a , or a key that is generated by the electronic device 2 a or the server 3 .
  • the encrypting algorithm may be one conforming with the Advanced Encryption Standard (AES)
  • AES Advanced Encryption Standard
  • the microprocessor of the sensor device 1 decrypts the encrypted first key using a decrypting algorithm to obtain a second key.
  • the decrypting algorithm may be one conforming with the AES.
  • step 204 the microprocessor of the sensor device 1 encrypts the second key using the encrypting algorithm to obtain an encrypted second key, and controls the transmitter to transmit the encrypted second key to the electronic device 2 a.
  • step 205 the processor 23 of the electronic device 2 a decrypts the encrypted second key using the decrypting algorithm to obtain a third key.
  • step 206 the processor 23 of the electronic device 2 a compares the third key and the first key, and determines whether the third key is identical to the first key. When it is determined that the third key is identical to the first key, the electronic device 2 a determines that the sensor device 1 has obtained the first key, and the flow proceeds to step 207 . Otherwise, the electronic device 2 a determines that an error has occurred during the encryption key transmitting procedure, and the flow goes back to step 202 . It should be noted that, when it is determined that the third key is identical to the first key, it may be deduced that the first key, the second key and the third key must be identical to one another.
  • step 207 the processor 23 of the electronic device 2 a terminates the preliminary connection between the sensor device 1 and the electronic device 2 a after determining that the sensor device 1 has obtained the first key (i.e., the second key).
  • step 208 the processor 23 of the electronic device 2 a controls the communication module 21 to transmit the first key, which serves as the encryption key, to the server 3 .
  • the sensor device 1 encrypts the sensor dataset using the second key serving as the encryption key
  • the electronic device 2 decrypts the sensor dataset using the first key serving as the encryption key.
  • step 209 the server 3 stores the encryption key, and associates the encryption key with one of the user profiles that is associated with the user of the electronic device 2 a .
  • the user of the electronic device 2 a may operate another one of the electronic devices 2 to log onto the server 3 to obtain the encryption key.
  • the encryption key transmitting procedure as shown in FIG. 2 is implemented in order to enhance the security of the encryption key
  • the encryption key may be directly transmitted from the electronic device 2 a to the sensor device 1 in other embodiments. After the encryption key has been transmitted, the preliminary connection between the sensor device 1 and the electronic device 2 a may be terminated.
  • FIG. 3 is a flow chart illustrating steps of the data transmitting procedure according to one embodiment of the disclosure.
  • the data transmitting procedure is implemented by the system of FIG. 1 , and may be done between the sensor device 1 and any one of the electronic devices 2 (e.g., the electronic device 2 a ).
  • step 31 after at least one sensor dataset and a corresponding beacon dataset have been generated, the microprocessor of the sensor device 1 controls the transmitter to repeatedly (e.g., periodically) broadcast the beacon dataset and the sensor dataset that is associated with the beacon dataset.
  • the broadcasting is implemented using BLE, and the sensor dataset broadcasted is encrypted using the encryption key (i.e., the second key) and the encrypting algorithm.
  • step 32 the processor 23 of the electronic device 2 a controls the communication module 21 to activate the BLE communication, such that when the electronic device 2 a is within a communication range of the sensor device 1 , the communication module 21 is capable of receiving the beacon dataset broadcasted by the sensor device 1 .
  • step 33 the communication module 21 of the electronic device 2 a receives the beacon dataset broadcasted by the sensor device 1 .
  • the beacon dataset thus received is then stored in the storage module 22 .
  • step 34 the processor 23 of the electronic device 2 a determines whether to receive the sensor dataset associated with the beacon dataset received in step 33 .
  • the processor 23 of the electronic device 2 a may be triggered by the receipt of the beacon dataset to execute a procedure to determine whether the beacon dataset has been received by the electronic device 2 a before, for example, by accessing the storage module 22 to determine whether a beacon dataset already stored in the storage module 22 is the same as the beacon dataset received in step 33 .
  • the processor 23 may determine that the associated sensor dataset has also been received by the electronic device 2 a previously, and therefore is not required to be received again and the broadcasted sensor dataset may be ignored. In such a case, the flow proceeds to step 37 .
  • step 35 it is determined that the sensor dataset associated with the beacon dataset has not been received by the electronic device 2 a before and therefore should be received, and the flow proceeds to step 35 .
  • step 35 the processor 23 of the electronic device 2 a controls the communication module 21 to operate in a scan mode of the BLE. It is noted that in the scan mode, the communication module 21 is capable of receiving the sensor dataset currently broadcasted by the sensor device 1 .
  • step 36 in response to receipt of the sensor dataset, the processor 23 of the electronic device 2 a decrypts the sensor dataset using the encryption key (i.e., the first key) and the decrypting algorithm, and stores the decrypted sensor dataset in the storage module 22 . Afterward, the flow proceeds to step 37 .
  • the encryption key i.e., the first key
  • step 37 the processor 23 of the electronic device 2 a controls the communication module 21 to operate in a standby mode (e.g., deactivate the BLE communication). As such, the sensor dataset is successfully transmitted to the electronic device 2 a .
  • the electronic device 2 a is not required to establish a pairing and a peer-to-peer connection with the sensor device 1 during the data transmitting procedure. In this manner, the power consumed by the data transmitting procedure may be significantly reduced.
  • a number n of sensor datasets and a number n of beacon datasets are generated.
  • the microcontroller controls the transmitter to broadcast the beacon dataset A 1 and the sensor dataset B 1 in said order.
  • the electronic device 2 a is initially in the standby mode (shown in the form of a logic signal at 0).
  • the communication module 21 first receives the beacon dataset A 1 as a trigger to “wake up” from the standby mode (shown in the form of a logic signal going from 0 to 1), the processor 23 determines whether the beacon dataset A 1 has been received (step 34 ).
  • the processor 23 determines that the beacon dataset A 1 has not been received yet, and thus controls the communication module 21 to operate in the scan mode of the BLE (shown in the form of the logic signal going from 0 to 1), so as to receive the sensor dataset B 1 broadcasted by the sensor device 1 (step 35 ). Afterward, the electronic device 2 a is switched to the standby mode (shown in the form of a logic signal going from 1 to 0).
  • the beacon dataset A 1 and the sensor dataset B 1 may be broadcasted repeatedly (e.g., periodically) before the beacon dataset A 2 and the sensor dataset B 2 are generated.
  • the communication module 21 first receives the beacon dataset A 1 as a trigger, and proceeds to determine whether the beacon dataset A 1 has been received previously.
  • the electronic device 2 a determines that the corresponding sensor dataset B 1 has also been received previously and no data transmission is needed. Therefore, the electronic device 2 a remains in the standby mode, and no data is transmitted from the sensor device 1 to the electronic device 2 a.
  • the microcontroller is then configured to control the transmitter to broadcast the beacon dataset A 2 and the sensor dataset B 2 in said order.
  • the communication module 21 receives the beacon dataset A 2 as a trigger to “wake up” from the standby mode, and the processor 23 determines whether the beacon dataset A 2 has been received (step 34 ).
  • the processor 23 determines that the beacon dataset A 2 has not been received yet, and thus controls the communication module 21 to operate in the scan mode of the BLE, so as to receive the sensor dataset B 2 broadcasted by the sensor device 1 (step 35 ). Afterward, the electronic device 2 a is switched to the standby mode.
  • the communication module 21 first receives the beacon dataset A 2 as a trigger to “wake up” from the standby mode, and proceeds to determine whether the beacon dataset A 2 has been received.
  • the electronic device 2 a determines that the corresponding sensor dataset B 2 has also already been received and no data transmission is needed. As a result, the electronic device 2 a is configured to remain in the standby mode, and no data is transmitted from the sensor device 1 to the electronic device 2 a.
  • additional sensor dataset(s) and beacon dataset(s) may be generated at different time instances and broadcasted by the sensor device 1 .
  • each of the plurality of electronic devices 2 may be able to receive the sensor datasets simultaneously, and to use the encryption key to obtain the decrypted sensor datasets.
  • the embodiments of the disclosure provide a method and system for data transmission between the sensor device 1 and one or more electronic devices 2 .
  • the electronic device 2 operates in the scan mode only when it is determined that the sensor dataset is to be received, and stays in the standby mode in other time periods. That is to say, while the sensor device 1 broadcasts the sensor data that propagates in the air, the electronic device 2 may be capable of receiving the sensor data by switching to the scan mode. As such, the sensor data may be transmitted without a connection being established between the electronic device 2 and the sensor device 1 .
  • the electronic device 2 is not required to establish a pairing and a one-to-one connection with the sensor device 1 . In this manner, the power consumed by the data transmitting procedure may be significantly reduced.
  • the electronic device 2 may first establish the preliminary connection with the sensor device 1 for transmitting the encryption key thereto. Afterward, the sensor dataset to be broadcasted by the sensor device 1 may be encrypted. In such a manner, although the encrypted sensor dataset may be received by other devices, the encrypted sensor dataset cannot be decrypted by those devices without the encryption key and the decrypting algorithm. As such, the data transmitting procedure may be more secure while maintaining a low power consumption.

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